Cov phauj tshiab tau cuam tshuam loj rau kev tsim cov khoom lag luam PVC. Cov tsheb thauj neeg ua ntej sib kis, tshwj xeeb tshaj yog kev thauj mus los ntawm cov xeev, muaj kev cov nyom heev. Ntawm ib sab, kev ua tiav ntawm cov khoom nyoos xws li calcium carbide thiab cov pa roj carbon xiav yog qhov nyuaj, thiab lub tuam txhab tau yuam kom txo cov nra. Kev ntxhov siab ntawm cov khoom lag luam tiav lawm txo qhov load. Nyob rau tam sim no, nrog cov dej ntws khiav mus los ntawm kev siv dag zog, kev tsim cov lag luam PVC nyob rau sab qaum teb sab hnub poob tau rov qab mus rau qhov qub, thiab kev siv cov peev txheej ntawm PVC cov chaw lag luam, tshwj xeeb tshaj yog cov nroj tsuag ethylene, hauv East Tuam Tshoj thiab North Tuam Tshoj yog qhov tsawg.